Ichthyaetus relictus

The relict gull, or Central Asian gull, is a medium-sized gull 44–45cm long with a stocky, thick body. Breeding birds have black hoods including the nape, grey-brown foreheads and broad, white, half-moon markings around the eyes. Non-breeding adults have dark-smudged ear-coverts and hind crown, and their legs are orange and bills scarlet (Wikipedia, general species account).

It breeds at several locations in Mongolia (including Galuut, Khukh and Chukh Lakes), two in Kazakhstan, one in Russia and one in China, at Lake Hongjiannao (Wikipedia, general species account).